The US Department of Homeland Security issued its DeepSeek ban as Exclusion and Removal Order #2026-01 under the Federal Acquisition Supply Chain Security Act of 2018

In October 2026, the US Department of Homeland Security made public a July 2026 order that removes Chinese AI company DeepSeek's products, and third-party services built on its models, from civilian federal agency IT systems and bars agencies from buying them, citing national security and data risks.